A Compact Third-Order Triplexer Using Common Lumped-Element Triple-Mode Resonator

Jin Xu; Hao Wan; Jiang-Qiao Ding; Yin-Xia Zhu

doi:10.1515/freq-2018-0259

Article

A Compact Third-Order Triplexer Using Common Lumped-Element Triple-Mode Resonator

Jin Xu , Hao Wan , Jiang-Qiao Ding and Yin-Xia Zhu

Published/Copyright: August 30, 2019

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From the journal Frequenz Volume 73 Issue 9-10

Abstract

A compact third-order triplexer using a common lumped-element triple-mode resonator (LE-TMR) and LC resonators is presented in this paper. Every channel of proposed third-order triplexer has three resonant modes, i. e. one resonant mode from the common LE-TMR and another two resonant modes from two LC resonators. Step-to-step design procedure is given to guide the third-order triplexer design. As an example, a 0.9/1.8/3.5 GHz third-order triplexer with ripple bandwidths of 150/210/290 MHz is designed, fabricated and measured. The fabricated third-order triplexer has a compact circuit size of 0.163λ_g × 0.104λ_g, and high electrical performance can be also acquired.

Keywords: bandpass; lumped-element; multiple-mode resonator; triplexer

Acknowledgements

This work was supported in part by the Jiangsu Key Laboratory of Meteorological Observation and Information Processing & Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Joint Open Fund Project under Grant KDXS1806, the National Natural Science Foundation of China under Grant 61401358, the Fundamental Research Funds for the Central Universities under Grant 3102019PB003, and the State Key Laboratory of Millimeter Waves open research program under Grant K202030, the Natural Science Basic Research Plan in Shaanxi Province of China under Grant 2017JM6034, the Young Talent Fund of University Association for Science and Technology in Shaanxi under Grant 20160202.

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Received: 2018-12-25

Published Online: 2019-08-30

Published in Print: 2019-09-25

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https://doi.org/10.1515/freq-2018-0259

Keywords for this article

bandpass; lumped-element; multiple-mode resonator; triplexer